US5402760A - Fuel injection control apparatus for internal combustion engine - Google Patents

Fuel injection control apparatus for internal combustion engine Download PDF

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Publication number
US5402760A
US5402760A US08/063,787 US6378793A US5402760A US 5402760 A US5402760 A US 5402760A US 6378793 A US6378793 A US 6378793A US 5402760 A US5402760 A US 5402760A
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Prior art keywords
injection
period
pilot
timing
main
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US08/063,787
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English (en)
Inventor
Yasuhiro Takeuchi
Hideo Sugimoto
Tetsushi Natsume
Hideo Uono
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Denso Corp
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NipponDenso Co Ltd
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Priority claimed from JP4129088A external-priority patent/JP3052572B2/ja
Priority claimed from JP25010592A external-priority patent/JP3384000B2/ja
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D41/00—Electrical control of supply of combustible mixture or its constituents
    • F02D41/30—Controlling fuel injection
    • F02D41/38—Controlling fuel injection of the high pressure type
    • F02D41/3809—Common rail control systems
    • F02D41/3836—Controlling the fuel pressure
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D41/00—Electrical control of supply of combustible mixture or its constituents
    • F02D41/20—Output circuits, e.g. for controlling currents in command coils
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D41/00—Electrical control of supply of combustible mixture or its constituents
    • F02D41/30—Controlling fuel injection
    • F02D41/38—Controlling fuel injection of the high pressure type
    • F02D41/40—Controlling fuel injection of the high pressure type with means for controlling injection timing or duration
    • F02D41/402—Multiple injections
    • F02D41/403—Multiple injections with pilot injections
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B75/00—Other engines
    • F02B75/02—Engines characterised by their cycles, e.g. six-stroke
    • F02B2075/022—Engines characterised by their cycles, e.g. six-stroke having less than six strokes per cycle
    • F02B2075/027—Engines characterised by their cycles, e.g. six-stroke having less than six strokes per cycle four
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B3/00—Engines characterised by air compression and subsequent fuel addition
    • F02B3/06—Engines characterised by air compression and subsequent fuel addition with compression ignition
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D41/00—Electrical control of supply of combustible mixture or its constituents
    • F02D41/20—Output circuits, e.g. for controlling currents in command coils
    • F02D2041/202—Output circuits, e.g. for controlling currents in command coils characterised by the control of the circuit
    • F02D2041/2024—Output circuits, e.g. for controlling currents in command coils characterised by the control of the circuit the control switching a load after time-on and time-off pulses
    • F02D2041/2027—Control of the current by pulse width modulation or duty cycle control
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D41/00—Electrical control of supply of combustible mixture or its constituents
    • F02D41/20—Output circuits, e.g. for controlling currents in command coils
    • F02D2041/202—Output circuits, e.g. for controlling currents in command coils characterised by the control of the circuit
    • F02D2041/2055—Output circuits, e.g. for controlling currents in command coils characterised by the control of the circuit with means for determining actual opening or closing time
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D2200/00—Input parameters for engine control
    • F02D2200/02—Input parameters for engine control the parameters being related to the engine
    • F02D2200/04—Engine intake system parameters
    • F02D2200/0406—Intake manifold pressure
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D2200/00—Input parameters for engine control
    • F02D2200/02—Input parameters for engine control the parameters being related to the engine
    • F02D2200/06—Fuel or fuel supply system parameters
    • F02D2200/0602—Fuel pressure
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D2250/00—Engine control related to specific problems or objectives
    • F02D2250/04—Fuel pressure pulsation in common rails
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D41/00—Electrical control of supply of combustible mixture or its constituents
    • F02D41/30—Controlling fuel injection
    • F02D41/38—Controlling fuel injection of the high pressure type
    • F02D41/40—Controlling fuel injection of the high pressure type with means for controlling injection timing or duration
    • F02D41/402—Multiple injections
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/10—Internal combustion engine [ICE] based vehicles
    • Y02T10/40—Engine management systems

Definitions

  • the present invention relates to a fuel injection control apparatus for an internal combustion engine, which controls an electromagnetic injector (fuel injection valve) to supply fuel into a combustion chamber of the internal combustion engine.
  • an electromagnetic injector fuel injection valve
  • a highly-pressurized fuel injection apparatus equipped with e.g. common rail type injectors, has been conventionally used as an apparatus supplying fuel into combustion chambers of a diesel engine.
  • This type apparatus normally uses an injector having an electromagnetic valve to atomize fuel and supply it into the combustion chamber.
  • an injection rate is univocally determined in accordance with a diameter of an injection nozzle of the injector and an injection pressure of the same.
  • diesel engines have a disadvantage in generating a significant amount of combustion noise and NOx due to delay in firing fuel in the combustion chamber. This kind of noise or NOx problem cannot be solved by the injector itself, in the case where this injector has an injection rate being determined in the univocal manner as described above.
  • a known countermeasure solving this problem is a so-called pilot injection technology (For example, refer to Japanese Unexamined Patent Application Nos. SHO 63-5140 and 62-129540), in which a small amount of fuel is injected into the combustion chamber prior to an ordinary (main) fuel injection.
  • the above problem can be solved by actuating the injector twice to inject fuel separately during one compression stroke of the diesel engine.
  • this technology accompanies other problems as follows.
  • an exciting current supplied to the injector causes a delay in its building-up stage due to this coil inductance. Namely, the injector causes a delay in the initiating stage of its fuel injection period.
  • the injector is supplied with two kinds of currents as shown in FIG. 20(a).
  • One is a valve-opening current having a predetermined height and length corresponding to an injection pulse for an ordinary fuel injection.
  • the other is an exciting current having a relatively high but short pulse waveform corresponding to a trigger pulse, which is given from a high-voltage generator.
  • This arrangement can improve the injector to promptly initiate fuel injection without causing an adverse delay.
  • the injector has a solenoid to drive the electromagnetic valve
  • a residual magnetic flux remains in this solenoid due to an exciting current having flowed through the solenoid in response to the first activation of the injector (i.e. a pilot injection).
  • a significant amount of pressure pulsation remains in the injector or its associated pressure pipe due to this pilot fuel injection.
  • the residual magnetic flux and pressure pulsation are not preferable for the precise injector control because they give adverse effect to the response speed of the injector. In this case the response speed becomes very fast; therefore, the fuel injection initiates earlier than an expected (commanded) timing, accompanied with an unanticipated increase in fuel injection amount due to this earlier valve opening.
  • the residual magnetic flux is enlarged as a pilot injection period TP increases and an injection interrupt period TI decreases as shown in FIG. 2, which illustratively shows the relationship among the pilot injection period TP, the injection interrupt period TI, and the residual magnetic flux density.
  • a valve-opening time i.e. a time lag between the current supply and an actual opening of the valve
  • FIG. 3 which illustratively shows the relationship between the valve-opening time of the injector and the residual magnetic flux density. This gives adverse effect to the injection initiating timing and fuel injection amount in the second (main) activation of the injector executed after the first (pilot) injection.
  • providing a circuit for supplying a trigger pulse current in each activation of the injector is one of countermeasure for solving this problem but will not be preferable because of large size and complicatedness in its circuit configuration.
  • a means for supplying a preliminary current is also effective to solve this problem but will encounter with difficulties in ensuring valve closing and suppressing electric power consumption.
  • the present invention has a purpose; in view of above-described problems or disadvantages, to provide a novel fuel injection control apparatus for an internal combustion engine, in which the same electromagnetic valve performs both pilot and main injections in such a manner that the main injection is adjusted by taking account of a residual magnetic flux remaining in the electromagnetic valve after the pilot injection.
  • the purpose of the present invention is to adjust an injection timing and/or an injection amount of the main injection on the basis of the residual magnetic flux remaining in the electromagnetic valve after the pilot injection.
  • Another purpose of the present invention is to change an injection rate of the main injection in its building-up stage, on the basis of the residual magnetic flux remaining in the electromagnetic valve after the pilot injection.
  • Still another purpose of the present invention is to realize the above adjustment of the injection timing and/or injection amount or injection rate change in the main injection without making the circuit configuration complicated and increasing electric power consumption.
  • a fuel injection control apparatus for an internal combustion engine comprising:
  • a fuel injection valve for injecting fuel into an internal combustion engine
  • a current supply means for supplying current to the electromagnetic actuator
  • control means for controlling the electromagnetic actuator through the current supply means in response to an output of the sensor means, so as to adjust the fuel injection amount injected through the fuel injection valve in accordance with the driving condition of the internal combustion engine
  • control means comprising a pilot injection means for activating the electromagnetic actuator during a predetermined pilot injection period (TP) so as to cause the fuel injection valve to perform a pilot injection, an injection interrupt means for deactivating the electromagnetic actuator during a predetermined injection interrupt period (TI) so as to interrupt fuel injection after said pilot injection period (TP), and a main injection means for activating the electromagnetic actuator during a predetermined main injection period (TM) after the injection interrupt period (TI) so as to cause the fuel injection valve to perform a main injection; and
  • an adjusting means for adjusting a timing and/or a length of at least either of the pilot injection period (TP), injection interrupt period (TI), and main injection period (TM) in response to the output of the sensor means, so that main fuel injection can be adjusted in accordance with a residual magnetic flux remaining in the electromagnetic actuator at an initiating timing of the main injection period (TM).
  • the adjusting means adjusts a timing and/or a length of at least either of the pilot injection period (TP), injection interrupt period (TI), and main injection period (TM).
  • This adjustment can cause a change of the residual magnetic flux remaining in the electromagnetic actuator at the initiating timing of the main injection period (TM).
  • a response of the electromagnetic actuator is therefore, in the main injection, improved so as to optimize the main fuel injection.
  • a length of the main injection period (TM) on the basis of an indication value representing a residual magnetic flux remaining in the electromagnetic actuator after the pilot injection period (TP), so as to compensate the affection given by the residual magnetic flux.
  • TP pilot injection period
  • TDF time lag
  • TTM main injection timing
  • TP pilot injection period
  • TDF time lag
  • adjustment of the pilot injection period and/or the injection interrupt period is performed prior to the main injection period. With this adjustment, the residual magnetic flux can be adjusted before the main injection period starts. Thus, the response of the electromagnetic actuator is improved in the main injection period so as to optimize the injection rate change curve.
  • the present invention causes the current supply means to operate the fuel injector in accordance with the driving condition of the internal combustion engine, so as to supply exciting current to the driving solenoid of the fuel injection valve for fuel injection. Furthermore, in accordance with the present invention, two independent, i.e. pilot and main, current supply operations are sequentially carried out for the fuel injection in accordance with the driving condition.
  • the present invention further corrects the current supply pattern of the main current in accordance with the activated (magnetized) condition of the driving solenoid due to the pilot injection current supplied prior to the main injection.
  • the current supply pattern of the main injection varies in accordance with the activated (or magnetized) condition of the driving solenoid. Therefore, it becomes possible to suppress adverse affection of the residual magnetic flux caused by the pilot injection performed prior to the main injection or the pressure pulsation caused by the pilot injection.
  • setting of the fuel injection amount and/or fuel injection timing is optimized to be a predetermined target value.
  • the fuel injection amount and the fuel injection initiating timing are appropriately adjusted so as to reduce smoke, noise, and NOx.
  • correction of the current supply pattern of the main current is executed in accordance with the activated (magnetized) condition caused by the pilot injection current supplied prior to the main injection current, this correction can be carried out in any way. For example, it will be possible for this purpose to correct either or both of the main injection period and the main injection initiating timing.
  • the activated (magnetized) condition of the driving solenoid prior to the main injection will be detected from the pilot injection period, the injection interrupt period between the pilot and main injection periods, the time lag in the injection initiating timing between the pilot and main injections, or their combinations.
  • the current supply pattern of the main injection can be corrected in accordance with this detected condition.
  • FIG. 1 is a schematic diagram exemplarily showing a fundamental constitution of the first embodiment
  • FIG. 2 is a graph showing a relationship among a magnetic flux density, a pilot injection period, and an injection interrupt period;
  • FIG. 3 is a graph showing a relationship between a valve-opening time and the magnetic flux density
  • FIG. 4 is a view showing a system hardware of a fuel injection control apparatus embodying the present invention.
  • FIG. 5 is a circuit diagram showing an injector actuation circuit
  • FIG. 6 is a flowchart showing a control procedure of the fuel injection control in accordance with the first embodiment
  • FIGS. 7(A) and 7(B) are graphs respectively showing a map for determining a pilot injection pattern
  • FIG. 8 is a timing chart showing a pilot injection period, an injection interrupt period, and a main injection period for the injector
  • FIG. 9 is a graph showing a relationship between an injection amount and a current supply (i.e. injection) period
  • FIGS. 10(A) and 10(B) are tables respectively listing correction data of a correction map
  • FIGS. 11(A), 11(B), and 11(C) are views illustrating the first embodiment and two prior arts for comparing functional difference therebetween;
  • FIG. 12 is a schematic diagram exemplarily showing a fundamental constitution of the second embodiment
  • FIGS. 13(A) through 13(D) are views illustrating the principle of the second embodiment
  • FIG. 14 is a flowchart showing a control procedure of the fuel injection control in accordance with the second embodiment
  • FIG. 15 is a table showing an injection rate level (L) determining map
  • FIG. 16 is a timing chart showing the injection periods for the injector
  • FIGS. 17(A) through 17(C) are graphs showing the relationship between the injection rate level (L) and the injection timing correction value TA, the pilot injection period TP, and the injection interrupt period TI;
  • FIG. 18 is a table illustrating various injection patterns
  • FIG. 19 is a table illustrating injection conditions in accordance with various driving condition.
  • FIGS. 20(A) and 20(B) are views illustrating conventional art.
  • FIG. 1 is a schematic diagram exemplarily showing a fundamental constitution of the first embodiment of a fuel injection control apparatus for an internal combustion engine.
  • an internal combustion engine M1 is supplied with fuel by a fuel injection valve M2.
  • This fuel injection valve M1 is actuated by a driving solenoid M3.
  • a current supply means M4 supplies exciting current to the driving solenoid M3.
  • a driving condition detecting means M5 is provided for detecting a driving condition of the internal combustion engine M1.
  • the current supply means M4 receives the driving condition detected by the driving condition detecting means M5 and sequentially supply an exciting current to the driving solenoid M3 of the fuel injection valve M2 during a predetermined pilot injection period and subsequently during a predetermined main injection period, so as to effect the fuel injection in accordance with the driving condition detected by the driving condition detecting means M5.
  • the fuel injection apparatus further includes a correction means M6, which corrects a current supply pattern of the main injection in accordance with the activated (magnetized) condition of the driving solenoid M2. That is, the residual magnetic flux remains in the driving solenoid M2 due to exciting current having flowed therethrough during the pilot injection period prior to the main injection period.
  • This correction means M6 adjusts the fuel injection amount and/or fuel injection timing to a predetermined target value by taking account of the residual magnetic flux.
  • FIG. 4 is a view schematically showing an overall system hardware of the fuel injection control apparatus embodying the present invention.
  • the fuel injection control apparatus 1 is an accumulator injection type.
  • This injection control apparatus 1 includes a 4-cycle, 6-cylinder, diesel engine 2, fuel injection valves (i.e. injectors) 3 supplying atomized fuel directly into respective combustion chambers of the diesel engine 2, an accumulator (i.e. a common rail) 4 accumulating a pressurized fuel to be supplied to these injectors 3, a fuel supply pump 5 feeding a pressurized fuel into the common rail 4, and an electronic control unit (ECU) 6 controlling these units.
  • ECU electronice control unit
  • the fuel supply pump 5 sucks up fuel stored in a fuel tank 10 through a low-pressure pump 11 in accordance with a control command fed from the ECU 6, and thereafter, pressurizes this fuel to a higher pressure therein.
  • pressurized fuel is fed into the common rail 4 through a fuel feeding pipe 12.
  • Injectors 3 are connected through branch pipes 13 to the common rail 4 accumulating highly-pressurized fuel therein.
  • An electromagnetic control valve 14, provided in each injector 3, opens or closes the fuel passage, so that an adequate amount of highly-pressurized fuel accumulated in the common rail 4 can be injected into the combustion chamber of the diesel engine 2.
  • the ECU 6 is associated with a rotational speed sensor 7 and an accelerator sensor 8 each serving as a driving condition detecting means.
  • the rotational speed sensor 7 detects an engine rotational speed Ne
  • the accelerator sensor 8 detects an accelerator opening degree Acc representing an engine load.
  • some other sensors such as a cooling water temperature sensor, an intake air temperature sensor, and an intake air pressure sensor are provided as one of a driving condition detecting means.
  • the ECU 6 receives the information detected by the driving condition detecting sensors (7, 8,---) and performs a feedback control of the common rail pressure to obtain an optimum fuel injection pressure, so that the combustion condition of the diesel engine 2 can be optimized in accordance with the detected driving condition.
  • the ECU 6 performs the fuel injection control, which will be described later in detail, by actuating the control valve 14 of the injector 3 on the basis of the engine rotational speed Ne detected by the rotational speed sensor 7 and the accelerator opening degree Acc detected by the accelerator sensor 8.
  • Opening and closing operation of this control valve 14 provided in each injector 3 is executed by an injector actuating circuit 20 shown in FIG. 5 on the basis of an injection control command which is fed from the ECU 6.
  • This injector control command is given for on-off controlling the injector solenoid 21 of the control valve 14 to adjust the fuel injection amount and/or fuel injection timing, and its value is calculated on the basis of detected signals obtained from the rotational speed sensor 7, the accelerator sensor 8 and others.
  • the ECU 6 outputs this injection control command at predetermined timings based on the information detected from the rotational speed sensor 7, a cylinder discrimination sensor (not shown), and others.
  • the control command to be fed to the fuel supply pump 5 is also output at predetermined timings based on the information detected from the rotational speed sensor 7, the common rail pressure sensor 9, the cylinder discrimination sensor and others.
  • the injector actuating circuit 20 includes a charge coil L and a first switching transistor T1, which are connected in series between an electric power source terminal 22 and the ground.
  • a constant-current circuit 23 a first diode 24, an injector solenoid 21, and a second switching transistor T2 are connected together in series between an electric power source terminal 22 and the ground.
  • Second and third diodes 25, 26 interpose between a downstream end of the coil L and an upstream end of the injector solenoid 21.
  • a capacitor C is connected at one end between these diodes 25, 26 and connected at the other end to the ground.
  • Transistors T1, T2 are connected with the ECU 6 at their base terminals B1, B2, respectively. Emitters E1, E2 of the transistors T1, T2 are grounded.
  • the ECU 6 supplies on-off control signals to the base terminal B1 of the first transistor T1, so that the constant voltage can be charged in the capacitor C. Furthermore, the ECU 6 supplies an injector driving signal to the base terminal B2 of the second transistor T2.
  • the second transistor T2 when the second transistor T2 is turned on, a large current is discharged in a moment from the capacitor C along an arrow c to give an exciting current to the injector solenoid 21.
  • the constant-current circuit 23 causes a constant current to flow along an arrow d to give a valve-opening current to the injector solenoid 21.
  • the injector 3 is activated by both the exciting current and the valve-opening current.
  • the activation of the second transistor T2 is repeated twice to supply the injector solenoid 21 the valve-opening current twice during one compression stroke in each combustion chamber of the diesel engine 2. That is, two, i.e. pilot and main, injections are sequentially performed in accordance with predetermined pilot and main injection periods in the vicinity of the top dead center of the compression stoke. An injection interrupt period, during which the injector is deactivated to halt the fuel injection, is provided between these pilot and main injection periods.
  • the injector solenoid 21 is supplied with both the exciting current and the valve-opening current. As electric charge stored in the capacitor C is entirely discharged in this pilot injection period, only the valve-opening current flows in the main injection period.
  • the ECU 6 detects through various sensors the driving condition of the engine 2 such as an engine rotational speed Ne, an accelerator opening degree Acc, a cooling water temperature Tw, an intake air temperature Ta, an intake air pressure Pa and others.
  • the ECU 6 calculates fundamental control values such as a fundamental injection amount KQ, i.e. a total injection amount as a summation of a pilot injection amount QP and a main injection amount QM, a fundamental injection initiating timing KT, and an injection pressure KP on the basis of the detected driving condition.
  • fundamental control values such as a fundamental injection amount KQ, i.e. a total injection amount as a summation of a pilot injection amount QP and a main injection amount QM, a fundamental injection initiating timing KT, and an injection pressure KP on the basis of the detected driving condition.
  • step S120 the ECU 6 judges whether or not the pilot injection should be effected. If the judgement in this step S120 is YES, the ECU 6 proceeds to a step S130. On the contrary, if the judgement in this step S120 is NO, the ECU 6 proceeds to a step S240, a content of which will be described later in detail.
  • a step S130 the ECU 6 calculates a pilot injection amount QP together with a time lag TDF between the pilot and main injections, i.e. a time difference in their injection initiating timings. Furthermore, the main injection amount QM is obtained by subtracting the pilot injection amount QP from the fundamental injection amount KQ.
  • the pilot injection amount QP and the time lag TDF are obtained from the map shown in FIGS. 7(A) and 7(B) by using parameters of the engine rotational speed Ne and the fundamental injection amount (i.e. total injection amount) KQ calculated in the step S110.
  • pilot injection amount QP and the time lag TDF are then corrected in accordance with the cooling water temperature Tw, the intake air temperature Ta, the intake air pressure Pa and others.
  • a step S140 the ECU 6 detects a common rail pressure Pc. Furthermore in a step S150, the ECU 6 calculates several injection initiating timings and injection periods as fundamental but temporary data (which will be corrected later) on the basis of the pilot injection amount QP, the main injection amount QM, the fundamental injection initiating timing KT, and the common rail pressure Pc obtained in the previous steps S100 through S140.
  • these temporary fundamental data include the following four data: the pilot injection initiating timing TTP measured from the predetermined reference crank angle; the pilot injection period TP, corresponding to the pilot injection amount QP; the main injection initiating timing TTM; and the main injection period TM, corresponding to the main injection amount QM.
  • the main injection initiating timing TTM corresponds to the fundamental injection timing KT obtained in the step S110.
  • This timing TTM is expressed in terms of an elapsed time from the reference engine crank angle.
  • the pilot injection initiating timing TTP is determined as a timing retroacting from the main injection initiating timing TTM by an amount corresponding to the time lag (i.e. injection initiating timing difference) TDF obtained in the step S130.
  • the pilot injection period TP is obtained from the map shown in FIG. 9 in accordance with the parameters of the injection amount (i.e. pilot injection amount QP) obtained in the S130 and the common rail pressure Pc detected in the step S140.
  • the main injection period TM is also obtained from the map shown in FIG. 9 in accordance with the parameters of the injection amount (i.e. main injection amount QM) obtained in the step S130 and the common rail pressure Pc detected in the step S140.
  • a step S160 the ECU 6 obtains a correction amount ⁇ TQM of the main injection period TM and a correction amount ⁇ T of the pilot and main injection initiating timings TTP, TTM on the basis of the pilot injection period TP obtained in the step S150 and the time lag TDF obtained in the step S130.
  • the main injection period correction amount ⁇ TQM (this correction amount is expressed in terms of current supply time ( ⁇ s)) is obtained from the map shown in FIG. 10(A). Furthermore, the injection initiating timing correction shift amount ⁇ T (an amount for shifting the pilot and main injection initiating times TTP, TTM) is obtained from the map shown in FIG. 10(B).
  • these maps shown in FIGS. 10(A) and 10(B) are prepared more with respect to different common rail pressures, so as to constitute a three-dimensional interpolation map system.
  • the ECU 6 modifies the main injection period TM and the pilot and main injection initiating timings TTP, TTM on the basis of the main injection period correction amount ⁇ TQM and the injection initiating timing correction shift amount ⁇ T.
  • the final main injection period TM' is obtained in accordance with the following equation (1), wherein the main injection period TM is modified in accordance with the main injection period correction amount ⁇ TQM.
  • the final main injection period TM' is reduced by taking account of the influence of the residual magnetic flux in the driving solenoid.
  • the main injection period correction amount ⁇ TQM increases as the pilot injection period TP increases.
  • the final main injection period TM' decreases with increasing pilot injection period TP.
  • the main injection period correction amount ⁇ TQM decreases as the time lag TDF increases. Therefore, the final main injection period TM' decreases with decreasing time lag TDF.
  • the final pilot and main injection initiating timings TTP' and TTM' are obtained in accordance with the following equations (2) and (3), wherein the pilot and main injection initiating timings TTP and TTM are modified in accordance with the injection initiating timing correction shift amount ⁇ T.
  • the injection initiating timing correction shift amount ⁇ T increases as the pilot injection period TP increases. Therefore, the final pilot and main injection initiating timings TTP' and TTM' delay with increasing pilot injection period TP.
  • the injection initiating timing correction shift amount ⁇ T decreases as the time lag TDF increases. Therefore, the final pilot and main injection initiating timings TTP' and TTM' delay with decreasing time lag TDF.
  • step S180 the ECU 6 actuates the injector 3 on the basis of the final pilot injection initiating timing TTP', the pilot injection period TP, the final main injection initiating timing TTM', the final main injection period TM' and others, and then completes this procedure.
  • the ECU 6 calculates the injection initiating timing TT and the injection period T on the basis of the fundamental injection amount KQ, the fundamental injection initiating timing KT and the common rail pressure Pc.
  • the injection initiating timing TT represents an elapsed time measured from the reference crank angle of the engine 2 as well as the main injection initiating timing TTM shown in FIG. 8.
  • the injection period T is obtained from the map of FIG. 9 based on the parameters of the fundamental injection amount KQ obtained in the step S110 and the common rail pressure Pc detected in the step S240.
  • the ECU 6 actuates the injector 3 on the basis of thus obtained injection initiating timing TT and the injection period T, and subsequently completes this procedure.
  • the present embodiment first of all calculates the main injection amount QM and the pilot injection amount QP in accordance with the driving condition, as well as the time lag (i.e injection initiating timing difference) TDF between the pilot injection and the main injection. Further, the pilot injection initiating timing TTP, the pilot injection period TP, the main injection initiating timing TTM, and the main injection period TM are obtained on the basis of the resultant values through above calculation.
  • the values TTP, TTM, and TM are further corrected by use of the map data for the main injection period correction amount ⁇ TQM and the injection initiating timing shift amount ⁇ T, so as to obtain the final pilot injection initiating timing TTP', the final main injection initiating timing TTM', and the final main injection period TM'. Then, the injector 3 is actuated based on these resultant final values.
  • the correction of reducing the main injection amount QM by use of the pilot injection amount QP or the time lag (injection initiating timing difference) TDF enables the engine 2 to be supplied with an optimum amount of fuel in accordance with the driving condition. Hence, it becomes possible to remarkably suppress smoke generating even in the case where the pilot injection is effected.
  • the fuel supply into the engine 2 can be carried out at an appropriate timing in accordance with the driving condition.
  • this brings an advantage of reducing a significant amount of noise and NOx.
  • FIG. 11(A) shows a conventional example adopting only the main injection.
  • FIG. 11(B) shows another conventional example adopting the pilot injection prior to the main injection.
  • FIG. 11(C) shows the present embodiment.
  • an actual injection timing (rate) of the main injection i.e. an nozzle lift of the injector, delays with respect to the injection signal (i.e. current supply signal) by an amount of ⁇ T1 in the case where no pilot injection is executed together with the main injection.
  • the injection timing (rate) of the main injection advances ⁇ T2 from the position of FIG. 11(A) by the presence of pilot injection, due to the residual magnetic flux etc. Therefore, the main injection amount increases by an amount ⁇ Q which is equivalent to this advance.
  • the present embodiment allows the injection signal to shift from a dotted line to a solid line as shown in FIG. 11(C) in accordance with the parameters of the pilot injection period TP and the time lag TDF between the pilot and main injection initiating timings. That is, the main injection period is shortened and therefore the main injection amount is correspondingly reduced to suppress smoke generating.
  • pilot and main injection initiating timings are both shifted by ⁇ T3 in accordance with above parameters. This enables the actual injection initiating timings of both the pilot and main injections to be appropriately corrected. Thus, noise and NOx can be reduced.
  • TP, TTM, TM, and TTP represent the pilot injection period, the main injection initiating timing being not corrected yet, the main injection period being not corrected yet, and the pilot injection initiating timing being not corrected yet, respectively.
  • TTM', TM', and TTP' represent the main injection initiating timing having already been corrected, the main injection period having already been corrected, and the pilot injection initiating timing having already been corrected, respectively.
  • the disclosed embodiment uses one discharge circuit consisting of the coil L, the capacitor C, and the transistor T1
  • the present invention does not exclude an attempt to provide one more discharge circuit for supplying exciting current to the pilot injection and the main injection independently. It will reduce the dispersion in the injection initiating timing of each injection.
  • the constant-current circuit 23 will be able to supply current for both pilot and main injections.
  • the parameter used in FIG. 10 is the time lag (i.e. injection initiating timing difference) TDF
  • the injection interrupt period TI can be also used as the parameter.
  • the above-described embodiment corrects the main injection period and the pilot and main injection initiating timings, it will be also preferable to correct the main injection period only or the main injection initiating timing only. Yet further, it will be preferable to correct the target injection amount or the target injection timing so as to indirectly correct the injection period or the injection initiating timing without directly correcting the injection period and the injection initiating timing.
  • the present embodiment allows the current supply pattern of the main injection to be corrected in accordance with the activated (magnetized) condition of the driving solenoid. That is, it becomes possible to vary the current supply pattern of the main injection in accordance with the activated (magnetized) condition of the driving solenoid prior to the main injection. With this arrangement, it becomes possible to suppress the adverse affection by the residual magnetic flux caused due to the pilot injection current supplied prior to the main injection current or by the pressure pulsation caused by the pilot fuel injection. Thus, the fuel injection amount and/or fuel injection timing will be set to an optimum value in the main injection.
  • the present embodiment enables the diesel engine to reduce not only smoke but noise and NOx even in the case where the pilot injection is executed.
  • FIG. 12 is a schematic diagram exemplarily showing a fundamental constitution of the second embodiment of the fuel injection control apparatus for an internal combustion engine.
  • an internal combustion engine M1 is supplied with fuel by a fuel injection valve M2.
  • This fuel injection valve M2 is actuated by a driving solenoid M3.
  • a current supply means M4 is provided for supplying exciting current to the driving solenoid M3.
  • a switching means M9 interposes between the driving solenoid M3 and the current supply means M4, for on-off controlling a circuit of the driving solenoid M3.
  • a driving condition detecting means M5 is provided for detecting a driving condition of the internal combustion engine M1.
  • This driving condition detecting means M5 is connected with the injection rate calculation means M7, which calculates an injection rate for the fuel injection valve M2 in accordance with the driving condition detected by the driving condition detecting means M5.
  • a timing control means M8 is provided for setting a pilot injection period TP during which an exciting current is supplied to the driving solenoid M3 prior to the opening of the fuel injection valve M2, a main injection period TM during which the fuel injection valve M2 is opened, and an injection interrupt period TI provided between the pilot and main injection periods TP and TM in accordance with the injection rate obtained by the injection rate calculation means M7.
  • the timing control means M8 actuates the switch means M9 in accordance with above setting prior to the main injection period, so as to adjust a residual magnetic flux remaining in the driving solenoid M3 caused due to pilot injection current.
  • the fuel injection control apparatus for an internal combustion engine causes the current supply means M4 to supply an exciting current to the driving solenoid M3 of the fuel injection valve M2 equipped in the internal combustion engine M1.
  • the driving condition detecting means M5 detects the driving condition such as a rotational speed Ne or a load (e.g. accelerator opening degree Acc) of the internal combustion engine M1.
  • the injection rate calculation means M7 obtains the injection rate for the fuel injection valve M2.
  • the timing control means M8 sets the pilot and main injection periods TP and TM on the basis of this injection rate, and further actuates the switch means M9 which on-off controls the circuit for the driving solenoid M3 in accordance with this setting so as to adjust the turning on-and-off timing of the circuit for the driving solenoid M3.
  • the timing control means M8 serves as a control means for varying the pilot injection period TP, the main injection period TM, and the injection interrupt period TI by adjusting the turning on-and-off timing of the circuit for the driving solenoid M3. Therefore, it becomes possible, before the main injection period initiates, to adjust an amount of the residual magnetic flux remaining in the driving solenoid caused due to the pilot injection current. This adjustment of the residual magnetic flux will realize a fine adjustment of the fuel injection rate in the very beginning of the main fuel injection.
  • the timing control means M8 adequately sets the pilot injection period TP, the injection interrupt period TI, and the main injection period TM as shown in FIG. 13(A).
  • a magnetic flux of the driving solenoid M3 caused during the pilot injection period TP overlaps, before extinguishing, with another magnetic flux newly caused by the main injection period TM partly, i.e. at the very beginning of the main injection period, as shown in FIG. 13(B).
  • a nozzle lift amount of the fuel injection valve M2 increases as shown in FIG. 13(C) with a predetermined increasing rate corresponding to the overlap amount between two magnetic fluxes (i.e. a residual magnetic flux amount).
  • a dotted line in FIG. 13(C) shows a slow increase of the nozzle lift in case of no pilot injection period TP adopted.
  • an initial injection rate in an actual fuel injection varies as shown in FIG. 13(D).
  • the magnetic flux density becomes large as the pilot injection period TP increases or the injection interrupt period TI decreases. Exciting energy for activating the fuel injection valve M2 increases with increasing magnetic flux density. Also as explained with reference to FIG. 3, the valve-opening time is reduced with increasing magnetic flux density.
  • the present embodiment causes the timing control means M8 to adjust the pilot injection period TP, the main injection period TM, and the injection interrupt period TI for actuating the fuel injection valve M2, so as to vary the initial injection rate (building-up) in order to realize an optimum fuel injection control.
  • An overall system hardware of the fuel injection control apparatus in accordance with the second embodiment is identical with the one disclosed in FIG. 4.
  • an injector actuating circuit 20 for the second embodiment is also identical with the one disclosed in FIG. 5. Therefore, the overall system hardware and the injector actuating circuit 20 will not be explained further with reference to the drawings.
  • the ECU 6 detects through various sensors the driving condition of the engine 2 such as an engine rotational speed Ne, an accelerator opening degree Acc, a cooling water temperature Tw, an intake air temperature Ta, an intake air pressure Pa and others.
  • the ECU 6 calculates several fundamental control values including an injection amount KQ, an injection initiating timing KT, an injection pressure KP on the basis of the detected driving condition.
  • the ECU 6 determines a fundamental injection rate on the basis of the engine rotational speed Ne and the accelerator opening degree Acc with reference to an injection rate level (L) determining map shown in FIG. 15, in which a fundamental injection rate level L is classified into 5 grades in accordance with the driving condition (i.e. the engine load Acc and the engine rotational speed Ne) as will be described later in detail.
  • This fundamental level L can be further modified in accordance with the cooling water temperature Tw.
  • the ECU 6 detects a common rail pressure Pc. Furthermore in a step S340, the ECU 6 calculates an injection initiating timing TT measured from a predetermined reference crank angle in terms of an elapsed time, a pilot injection period TP, an injection interrupt period TI, and a main injection period TM as shown in FIG. 16, on the basis of the injection amount KQ, the injection initiating timing KT, the common rail pressure Pc, and the injection rate level L obtained in the previous steps S310, S320, and S330.
  • the injection initiating timing TT is determined in accordance with the following equation (4).
  • TBASE represents an ordinary injection initiating timing
  • TA represents a correction value to be set in accordance with previously described injection rate level L as shown in FIG. 17(A).
  • TA decreases with increasing injection rate level L. Therefore, the injection initiating timing TT is advanced as the injection rate level L decreases.
  • the pilot injection period TP is determined on the basis of the injection rate level L and the common rail pressure Pc as shown in FIG. 17(B).
  • the pilot injection period TP is set smaller when the common rail pressure is higher, because a relatively large amount of fuel is injected when the common rail pressure is high.
  • the pilot injection period TP is set larger as the injection rate level L decreases. As shown in FIG. 15, the injection rate level L decreases as the engine load Acc decreases and as the engine rotational speed Ne decreases. Therefore, the pilot injection period TP is set larger with decreasing engine load Acc and engine rotational speed Ne.
  • the injection interrupt period TI is determined by the injection rate level L and the common rail pressure Pc as shown in FIG. 17(C).
  • the injection interrupt period TI is set smaller when the common rail pressure is higher, because the pilot injection period TP is set smaller as shown in FIG. 17(C).
  • the injection interrupt TI is set smaller as the injection rate level L increase, i.e. as the engine load Acc increases and the engine rotational speed Ne increases. By setting the injection interrupt period TI smaller, a required amount of the magnetic flux density is obtained as shown in FIG. 2.
  • the main injection period TM determining a main injection fuel amount is determined on the basis of the injection amount calculated in the previous step S310 and the common rail pressure Pc as shown in FIG. 9.
  • step S350 the ECU 6 actuates the injector 3 on the basis of the respective periods TT, TP, TI, TM calculated in the step 340, and then completes this procedure.
  • the second transistor T2 is actuated to serve as a switch means on the basis of the respective periods TT, TP, TI, TM determined in accordance with previous injection rate level L.
  • modification of the driving current pattern can realize any type of activated conditions of the injector 3 before the injector 3 opens the valve.
  • an initial building-up of the nozzle lift i.e. injection rate
  • an initial building-up of the nozzle lift is optimized by selecting an appropriate one of various injection types, e.g. a pilot injection, a boot injection, a trapezoidal injection, a rectangular injection so as to fit to the driving condition. Selecting one of various injection types is easy to perform, and therefore is advantageous in simplifying or facilitating the fuel injection control.
  • the adjustment of the pilot injection pulse TP and the injection interrupt period TI will allow the magnetic flux to remain adequately in the injector solenoid 21. This brings a remarkable effect of optionally varying the building-up (inclination) rate of the nozzle lift curve.
  • the injection rate can be appropriately set in accordance with the cooling water temperature Tw or the engine rotational speed Ne in the initial stage of the fuel injection in any of an idling condition, a low-load driving condition, and a high-load driving condition. Hence, this makes it possible to reduce the noise of the diesel engine 2 and NOx amount emitted from the same.
  • the same function can be attained by controlling the actuation timing of the first transistor T2 so as to determine the pilot injection period TP, the main injection period TM, and the injection interrupt period TI.
  • the residual magnetic field in the injector solenoid 21 would be adjusted adequately to control the initial stage of the fuel injection. Such a modification will be advantageous in simplifying the circuit configuration as well as bringing the same effect as the previous embodiment.
  • the fuel injection apparatus for an internal combustion engine in accordance with this embodiment provides the adjusting means, by which the pilot injection period, the main injection period, and the injection interrupt period can be adequately set.
  • the fuel injection valve is actuated in accordance with this setting so as to appropriately vary the initial injection rate of the main fuel injection. Accordingly, the present embodiment makes it possible to realize an optimum fuel injection control for a diesel engine. As a result, with an apparatus simple in configuration, the present embodiment brings a remarkable effect of reducing noise of the diesel engine and NOx emitted from the same.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Electrical Control Of Air Or Fuel Supplied To Internal-Combustion Engine (AREA)
  • Fuel-Injection Apparatus (AREA)
US08/063,787 1992-05-21 1993-05-20 Fuel injection control apparatus for internal combustion engine Expired - Lifetime US5402760A (en)

Applications Claiming Priority (4)

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JP4-129088 1992-05-21
JP4129088A JP3052572B2 (ja) 1992-05-21 1992-05-21 内燃機関の燃料噴射制御装置
JP25010592A JP3384000B2 (ja) 1992-09-18 1992-09-18 内燃機関の燃料噴射制御装置
JP4-250105 1992-09-18

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Cited By (58)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5515830A (en) * 1995-05-22 1996-05-14 Kokusan Denki Co., Ltd. Fuel injection equipment for internal combustion engine
EP0767303A1 (de) * 1995-10-02 1997-04-09 Hino Motors, Inc. Dieselmotor
US5647317A (en) * 1993-08-27 1997-07-15 Weisman, Ii; S. Miller Method for engine control
DE19712143A1 (de) * 1997-03-22 1998-09-24 Bosch Gmbh Robert Verfahren und Vorrichtung zur Steuerung einer Brennkraftmaschine
DE19720378A1 (de) * 1997-05-15 1998-11-19 Daimler Benz Ag Verfahren zur Bestimmung der Öffnungszeit eines Einspritzventiles eines Common-Rail-Einspritzsystemes
WO1998055749A1 (en) * 1997-06-06 1998-12-10 Detroit Diesel Corporation Method for enhanced split injection in internal combustion engines
DE19756986C1 (de) * 1997-12-20 1999-06-02 Daimler Chrysler Ag Speichereinspritzsystem
WO1999031380A1 (en) * 1997-12-18 1999-06-24 Caterpillar Inc. Method for delivering a small quantity of fuel with a hydraulically-actuated injector during split injection
WO1999032777A1 (en) * 1997-12-19 1999-07-01 Caterpillar Inc. Electronic control and method for consistently controlling the amount of fuel injected by a hydraulically activated, electronically controlled injector fuel system to an engine
US5986871A (en) * 1997-11-04 1999-11-16 Caterpillar Inc. Method of operating a fuel injector
US6005763A (en) * 1998-02-20 1999-12-21 Sturman Industries, Inc. Pulsed-energy controllers and methods of operation thereof
US6032642A (en) * 1998-09-18 2000-03-07 Detroit Diesel Corporation Method for enhanced split injection in internal combustion engines
US6062193A (en) * 1996-09-27 2000-05-16 Institut Francais Du Petrole Process for controlling the quantity of fuel injected into a diesel engine
US6076508A (en) * 1997-07-22 2000-06-20 Isuzu Motors Limited Fuel injection control device
US6085729A (en) * 1997-12-10 2000-07-11 Denso Corporation Fuel injection control for engines responsive to fuel injection timing
US6116209A (en) * 1998-05-27 2000-09-12 Diesel Technology Company Method of utilization of valve bounce in a solenoid valve controlled fuel injection system
US6125796A (en) * 1998-02-18 2000-10-03 Caterpillar Inc. Staged injection of an emulsified diesel fuel into a combustion chamber of a diesel engine
US6125823A (en) * 1999-05-27 2000-10-03 Detroit Diesel Corporation System and method for controlling fuel injections
WO2000073642A2 (en) * 1999-05-27 2000-12-07 Detroit Diesel Corporation System and method for controlling fuel injections
US6172602B1 (en) 1999-03-22 2001-01-09 Detroit Diesel Corporation Maintenance alert system for heavy-duty trucks
US6209513B1 (en) * 1996-07-02 2001-04-03 Komatsu Ltd. Inductive load driving device and driving method
US6240772B1 (en) 1998-12-09 2001-06-05 Detroit Diesel Corporation System and method for detecting engine malfunction based on crankcase pressure
US6240896B1 (en) * 1998-04-10 2001-06-05 Isuzu Motors Limited Diesel engine fuel injection control device and fuel injection control method
US6305348B1 (en) 2000-07-31 2001-10-23 Detroit Diesel Corporation Method for enhanced split injection in internal combustion engines
US6356186B1 (en) 1999-03-24 2002-03-12 Detroit Diesel Corporation Vehicle anti-theft system and method
EP1217197A2 (de) 2000-12-22 2002-06-26 Robert Bosch Gmbh Verfahren und Vorrichtung zur Überwachung eines Abstands zwischen zwei Einspritzvorgängen
FR2818696A1 (fr) 2000-12-22 2002-06-28 Bosch Gmbh Robert Procede et dispositif d'injection de carburant dans un moteur a combustion interne
US6412469B1 (en) * 1999-07-21 2002-07-02 Nissan Motor Co., Ltd. Fuel injection control system for diesel engine
US6415762B1 (en) * 2000-07-13 2002-07-09 Caterpillar Inc. Accurate deliver of total fuel when two injection events are closely coupled
US6450149B1 (en) * 2000-07-13 2002-09-17 Caterpillar Inc. Method and apparatus for controlling overlap of two fuel shots in multi-shot fuel injection events
US6453874B1 (en) * 2000-07-13 2002-09-24 Caterpillar Inc. Apparatus and method for controlling fuel injection signals during engine acceleration and deceleration
US6557532B1 (en) * 1999-12-15 2003-05-06 Hitachi, Ltd. Fuel injection apparatus and method for cylinder injection type internal combustion engine
US6564771B2 (en) 2000-07-08 2003-05-20 Robert Bosch Gmbh Fuel injection system for an internal combustion engine
WO2003069146A1 (fr) * 2002-02-18 2003-08-21 Toyota Jidosha Kabushiki Kaisha Dispositif de reglage de l'injection de carburant dans un moteur a combustion interne, et procede d'alimentation par injection de carburant haute pression
US6729297B2 (en) * 2002-06-24 2004-05-04 Toyota Jidosha Kabushiki Kaisha Fuel injection control device
US20050047053A1 (en) * 2003-07-17 2005-03-03 Meyer William D. Inductive load driver circuit and system
US20050257777A1 (en) * 2003-01-30 2005-11-24 Denso Corporation Fuel injection system
US20060259227A1 (en) * 2003-04-11 2006-11-16 Jurgen Fritsch Method for determining the injection duration in an internal combustion engine
US20070056563A1 (en) * 2005-08-02 2007-03-15 Sebastian Kanne Method for controlling an injection system of an internal combustion engine
US20080228374A1 (en) * 2006-11-14 2008-09-18 Denso Corporation Fuel injection device and adjustment method thereof
US20090063016A1 (en) * 2007-08-31 2009-03-05 Denso Corporation Injection control device of internal combustion engine
US20100126469A1 (en) * 2008-11-27 2010-05-27 Hyundai Motor Company Apparatus and Method for Controlling Quantity of Fuel Over Common Rail Diesel Engine
US7920957B2 (en) * 2005-07-14 2011-04-05 Robert Bosch Gmbh Method and control device for metering fuel to combustion chambers of an internal combustion engine
US20110192372A1 (en) * 2010-02-05 2011-08-11 GM Global Technology Operations LLC Method for operating an injection system of an internal combustion engine
US20110295490A1 (en) * 2010-06-01 2011-12-01 Honda Motor Co., Ltd. Fuel supply apparatus for internal combustion engine
US8095295B2 (en) * 2007-02-02 2012-01-10 Continental Automotive Gmbh Device and method for controlling fuel injection
US20120197512A1 (en) * 2011-01-31 2012-08-02 Honda Motor Co., Ltd. Fuel injection control apparatus for internal combustion engine and method for controlling internal combustion engine
US20130103287A1 (en) * 2010-06-25 2013-04-25 Hui Li Method for regulating a fuel injection system of an internal combustion engine
DE10254921B4 (de) * 2001-11-26 2015-01-08 Denso Corporation Kraftstoffzufuhr- und Einspritzsystem sowie Verfahren zum Steuern desselben
US20150101575A1 (en) * 2013-10-11 2015-04-16 Continental Automotive Gmbh Method and Computer Program for Actuating a Fuel Injector
US20150184626A1 (en) * 2012-08-06 2015-07-02 Continental Automotive Gmbh Method and Device for Controlling an Injection Process Comprising a Pre-Injection and a Main Injection
CN107636282A (zh) * 2015-05-26 2018-01-26 大陆汽车有限公司 用于多次喷射的燃料喷射器的致动
US20180058367A1 (en) * 2016-08-26 2018-03-01 General Electric Company Methods and system for diagnosing fuel injectors of an engine
US9982616B2 (en) 2013-02-25 2018-05-29 Denso Corporation Fuel injection controller and fuel injection system
CN108138681A (zh) * 2015-11-19 2018-06-08 马自达汽车株式会社 发动机的燃料喷射控制装置
US10378475B2 (en) * 2015-06-12 2019-08-13 Cpt Group Gmbh Method for determining a reference current value for actuating a fuel injector
US11060474B2 (en) 2016-12-13 2021-07-13 Denso Corporation Fuel injection control device
CN114981531A (zh) * 2020-12-30 2022-08-30 康明斯公司 用于测量在共轨燃料系统中的多脉冲燃料喷射事件期间的燃料量的方法

Families Citing this family (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3890654B2 (ja) * 1997-03-18 2007-03-07 株式会社デンソー 燃料噴射制御方法及び燃料噴射制御装置
JP3860894B2 (ja) * 1997-11-14 2006-12-20 トヨタ自動車株式会社 内燃機関のパイロット噴射制御装置
DE19931823B4 (de) * 1999-07-08 2009-02-12 Robert Bosch Gmbh Verfahren und Vorrichtung zur Steuerung einer Brennkraftmaschine
JP3721873B2 (ja) * 1999-08-03 2005-11-30 いすゞ自動車株式会社 エンジンの燃料噴射制御装置
JP4588971B2 (ja) 2000-07-18 2010-12-01 ローベルト ボツシユ ゲゼルシヤフト ミツト ベシユレンクテル ハフツング 内燃機関を制御するための方法及び装置
DE10123035A1 (de) * 2000-07-18 2002-01-31 Bosch Gmbh Robert Verfahren und Vorrichtung zur Steuerung einer Brennkraftmaschine
DE10039786A1 (de) * 2000-08-16 2002-02-28 Bosch Gmbh Robert Verfahren und Vorrichtung zur Steuerung einer Brennkraftmaschine
EP1352165B1 (de) 2000-12-27 2005-08-10 Siemens Aktiengesellschaft Verfahren zum steuern einer brennkraftmaschine
US6470849B1 (en) * 2001-06-26 2002-10-29 Caterpillar Inc. Separate injector main timing maps for use with and without pilot
EP1318288B1 (de) * 2001-12-06 2017-09-06 Denso Corporation Kraftstoffeinspritzsystem für eine Brennkraftmaschine
JP3815334B2 (ja) * 2002-01-11 2006-08-30 株式会社デンソー 燃料噴射装置のインターバル計測方法
JP4118652B2 (ja) * 2002-02-20 2008-07-16 株式会社デンソー 蓄圧式燃料噴射装置
DE10244538A1 (de) * 2002-09-25 2004-04-08 Robert Bosch Gmbh Verfahren zum Betrieb einer Kraftstoffeinspritzanlage für einen Verbrennungsmotor
DE102004020416A1 (de) * 2004-04-23 2005-11-10 Robert Bosch Gmbh Verfahren zum Betrieb einer Kraftstoffeinspritzanlage für einen Verbrennungsmotor
EP1657422A1 (de) 2004-11-12 2006-05-17 C.R.F. Societa' Consortile per Azioni Verfahren und Vorrichtung zur Steuerung der Kraftstoffeinspritzung einer Brennkraftmaschine
JP2007154853A (ja) * 2005-12-08 2007-06-21 Toyota Motor Corp 火花点火式直噴内燃機関の制御装置
DE202005021916U1 (de) * 2005-12-12 2011-05-12 C.R.F. Società Consortile per Azioni, Orbassano Kraftstoffeinspritz-System für einen Verbrennungsmotor
DE102006034513B3 (de) 2006-07-26 2007-10-04 Mtu Friedrichshafen Gmbh Verfahren zur Erkennung einer Voreinspritzung
DE102010022910B4 (de) * 2010-06-07 2017-09-21 Continental Automotive Gmbh Verfahren und Vorrichtung zum Betreiben eines Einspritzventils
DE102010062608A1 (de) 2010-12-08 2012-06-14 Robert Bosch Gmbh Verfahren zur Bestimmung der eingespritzten Kraftstoffmenge einer Brennkraftmaschine
EP3069002A1 (de) * 2013-11-15 2016-09-21 Sentec Ltd Steuereinheit für einen kraftstoffinjektor

Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3666232A (en) * 1969-04-18 1972-05-30 Bosch Gmbh Robert Method and means for reducing the response time of magnetic valves
US3727592A (en) * 1971-11-15 1973-04-17 Gen Motors Corp Electronic fuel injection system
JPS4945248A (de) * 1972-09-08 1974-04-30
US4452210A (en) * 1981-09-21 1984-06-05 Hitachi, Ltd. Fuel injection valve drive circuit
US4579096A (en) * 1983-12-08 1986-04-01 Toyota Jidosha Kabushiki Kaisha Diesel fuel injection pump with electromagnetic fuel spilling valve having pilot valve providing high responsiveness
JPS62129540A (ja) * 1985-11-29 1987-06-11 Nippon Denso Co Ltd デイ−ゼル機関用燃料噴射装置
EP0245540A2 (de) * 1986-05-15 1987-11-19 VDO Adolf Schindling AG Verfahren zur Ansteuerung eines Einspritzventils
JPS635140A (ja) * 1986-06-24 1988-01-11 Diesel Kiki Co Ltd 燃料噴射ポンプの噴射制御方法
US4718384A (en) * 1985-05-29 1988-01-12 Toyota Jidosha Kabushiki Kaisha Fuel injector for use in an internal combustion engine
EP0504401A1 (de) * 1990-10-05 1992-09-23 Nippondenso Co., Ltd. Vorrichtung zur regelung der voreinspritzung

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH06105062B2 (ja) * 1985-04-18 1994-12-21 株式会社日本自動車部品総合研究所 燃料噴射弁の制御装置
JPS62248853A (ja) * 1986-04-21 1987-10-29 Nippon Denso Co Ltd 燃料噴射率制御装置
JPH079204B2 (ja) * 1988-08-11 1995-02-01 トヨタ自動車株式会社 ディーゼル機関のパイロット噴射制御装置
JP2522375B2 (ja) * 1989-01-11 1996-08-07 トヨタ自動車株式会社 圧電素子の駆動装置

Patent Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3666232A (en) * 1969-04-18 1972-05-30 Bosch Gmbh Robert Method and means for reducing the response time of magnetic valves
US3727592A (en) * 1971-11-15 1973-04-17 Gen Motors Corp Electronic fuel injection system
JPS4945248A (de) * 1972-09-08 1974-04-30
US4452210A (en) * 1981-09-21 1984-06-05 Hitachi, Ltd. Fuel injection valve drive circuit
US4579096A (en) * 1983-12-08 1986-04-01 Toyota Jidosha Kabushiki Kaisha Diesel fuel injection pump with electromagnetic fuel spilling valve having pilot valve providing high responsiveness
US4718384A (en) * 1985-05-29 1988-01-12 Toyota Jidosha Kabushiki Kaisha Fuel injector for use in an internal combustion engine
JPS62129540A (ja) * 1985-11-29 1987-06-11 Nippon Denso Co Ltd デイ−ゼル機関用燃料噴射装置
EP0245540A2 (de) * 1986-05-15 1987-11-19 VDO Adolf Schindling AG Verfahren zur Ansteuerung eines Einspritzventils
JPS635140A (ja) * 1986-06-24 1988-01-11 Diesel Kiki Co Ltd 燃料噴射ポンプの噴射制御方法
US4782803A (en) * 1986-06-24 1988-11-08 Diesel Kiki, Co, Ltd. Fuel injection control method for fuel injection pump
EP0504401A1 (de) * 1990-10-05 1992-09-23 Nippondenso Co., Ltd. Vorrichtung zur regelung der voreinspritzung

Non-Patent Citations (10)

* Cited by examiner, † Cited by third party
Title
"Development Of New Electronically Controlled Fuel Injection System ECD-U2 For Diesel Engines" by M. Miyaki et al SAE International; International Congress and Exposition, Detroit, Mich., Feb. 25-Mar. 1, 1991; pp. 1-17.
"Patent Abstracts of Japan", vol. 11, No. 86 (M-572), Mar. 17, 1987, abstract of JP-A-61-241438.
"Patent Abstracts of Japan", vol. 12, No. 121 (M-686), Apr. 15, 1988, abstract of JP-A-62-248853.
"Patent Abstracts of Japan", vol. 14, No. 217 (M-970), May 8, 1990, abstract of JP-A-02-049953.
"Patent Abstracts of Japan", vol. 14, No. 464 (M-1033), Oct. 9, 1990, abstract of JP-A-02-185650.
Development Of New Electronically Controlled Fuel Injection System ECD U2 For Diesel Engines by M. Miyaki et al SAE International; International Congress and Exposition, Detroit, Mich., Feb. 25 Mar. 1, 1991; pp. 1 17. *
Patent Abstracts of Japan , vol. 11, No. 86 (M 572), Mar. 17, 1987, abstract of JP A 61 241438. *
Patent Abstracts of Japan , vol. 12, No. 121 (M 686), Apr. 15, 1988, abstract of JP A 62 248853. *
Patent Abstracts of Japan , vol. 14, No. 217 (M 970), May 8, 1990, abstract of JP A 02 049953. *
Patent Abstracts of Japan , vol. 14, No. 464 (M 1033), Oct. 9, 1990, abstract of JP A 02 185650. *

Cited By (93)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5647317A (en) * 1993-08-27 1997-07-15 Weisman, Ii; S. Miller Method for engine control
US5847644A (en) * 1993-08-27 1998-12-08 Detroit Diesel Corporation Method for engine control
US6330873B1 (en) * 1993-08-27 2001-12-18 Detroit Diesel Corporation Method for engine control
US5515830A (en) * 1995-05-22 1996-05-14 Kokusan Denki Co., Ltd. Fuel injection equipment for internal combustion engine
EP0767303A1 (de) * 1995-10-02 1997-04-09 Hino Motors, Inc. Dieselmotor
US5740775A (en) * 1995-10-02 1998-04-21 Hino Motors, Ltd. Diesel engine
US6209513B1 (en) * 1996-07-02 2001-04-03 Komatsu Ltd. Inductive load driving device and driving method
US6062193A (en) * 1996-09-27 2000-05-16 Institut Francais Du Petrole Process for controlling the quantity of fuel injected into a diesel engine
DE19712143C2 (de) * 1997-03-22 2002-03-28 Bosch Gmbh Robert Verfahren und Vorrichtung zur Steuerung einer Brennkraftmaschine
DE19712143A1 (de) * 1997-03-22 1998-09-24 Bosch Gmbh Robert Verfahren und Vorrichtung zur Steuerung einer Brennkraftmaschine
DE19720378A1 (de) * 1997-05-15 1998-11-19 Daimler Benz Ag Verfahren zur Bestimmung der Öffnungszeit eines Einspritzventiles eines Common-Rail-Einspritzsystemes
US5988143A (en) * 1997-05-15 1999-11-23 Daimlerchrysler Ag Process for determining the opening time of an injection valve of a common-rail injection system
DE19720378C2 (de) * 1997-05-15 2002-03-14 Daimler Chrysler Ag Verfahren zur Bestimmung der Öffnungszeit eines Einspritzventiles einer Hochdruckspeicher-Einspritzanlage
US5924403A (en) * 1997-06-06 1999-07-20 Detroit Diesel Corporation Method for enhanced split injection in internal combustion engines
AU743077B2 (en) * 1997-06-06 2002-01-17 Detroit Diesel Corporation Method for enhanced split injection in internal combustion engines
WO1998055749A1 (en) * 1997-06-06 1998-12-10 Detroit Diesel Corporation Method for enhanced split injection in internal combustion engines
US6164264A (en) * 1997-06-06 2000-12-26 Detroit Diesel Corporation Method for enhanced split injection in internal combustion engines
US6076508A (en) * 1997-07-22 2000-06-20 Isuzu Motors Limited Fuel injection control device
US5986871A (en) * 1997-11-04 1999-11-16 Caterpillar Inc. Method of operating a fuel injector
US6085729A (en) * 1997-12-10 2000-07-11 Denso Corporation Fuel injection control for engines responsive to fuel injection timing
WO1999031380A1 (en) * 1997-12-18 1999-06-24 Caterpillar Inc. Method for delivering a small quantity of fuel with a hydraulically-actuated injector during split injection
WO1999032777A1 (en) * 1997-12-19 1999-07-01 Caterpillar Inc. Electronic control and method for consistently controlling the amount of fuel injected by a hydraulically activated, electronically controlled injector fuel system to an engine
US6082331A (en) * 1997-12-19 2000-07-04 Caterpillar Inc. Electronic control and method for consistently controlling the amount of fuel injected by a hydraulically activated, electronically controlled injector fuel system to an engine
FR2772840A1 (fr) 1997-12-20 1999-06-25 Daimler Benz Ag Systeme d'injection a accumulateur
US6059204A (en) * 1997-12-20 2000-05-09 Daimlerchrysler Ag Accumulator injection system
DE19756986C1 (de) * 1997-12-20 1999-06-02 Daimler Chrysler Ag Speichereinspritzsystem
US6125796A (en) * 1998-02-18 2000-10-03 Caterpillar Inc. Staged injection of an emulsified diesel fuel into a combustion chamber of a diesel engine
US6005763A (en) * 1998-02-20 1999-12-21 Sturman Industries, Inc. Pulsed-energy controllers and methods of operation thereof
US6240896B1 (en) * 1998-04-10 2001-06-05 Isuzu Motors Limited Diesel engine fuel injection control device and fuel injection control method
US6116209A (en) * 1998-05-27 2000-09-12 Diesel Technology Company Method of utilization of valve bounce in a solenoid valve controlled fuel injection system
US6032642A (en) * 1998-09-18 2000-03-07 Detroit Diesel Corporation Method for enhanced split injection in internal combustion engines
US6240772B1 (en) 1998-12-09 2001-06-05 Detroit Diesel Corporation System and method for detecting engine malfunction based on crankcase pressure
USRE39845E1 (en) * 1999-03-22 2007-09-18 Detroit Diesel Corporation Maintenance alert system for heavy-duty trucks
US6172602B1 (en) 1999-03-22 2001-01-09 Detroit Diesel Corporation Maintenance alert system for heavy-duty trucks
US6356186B1 (en) 1999-03-24 2002-03-12 Detroit Diesel Corporation Vehicle anti-theft system and method
US6125823A (en) * 1999-05-27 2000-10-03 Detroit Diesel Corporation System and method for controlling fuel injections
WO2000073642A3 (en) * 1999-05-27 2001-03-01 Detroit Diesel Corp System and method for controlling fuel injections
US6516782B1 (en) 1999-05-27 2003-02-11 Detroit Diesel Corporation System and method for controlling fuel injections
WO2000073642A2 (en) * 1999-05-27 2000-12-07 Detroit Diesel Corporation System and method for controlling fuel injections
US6412469B1 (en) * 1999-07-21 2002-07-02 Nissan Motor Co., Ltd. Fuel injection control system for diesel engine
US6557532B1 (en) * 1999-12-15 2003-05-06 Hitachi, Ltd. Fuel injection apparatus and method for cylinder injection type internal combustion engine
US6564771B2 (en) 2000-07-08 2003-05-20 Robert Bosch Gmbh Fuel injection system for an internal combustion engine
US6453874B1 (en) * 2000-07-13 2002-09-24 Caterpillar Inc. Apparatus and method for controlling fuel injection signals during engine acceleration and deceleration
US6415762B1 (en) * 2000-07-13 2002-07-09 Caterpillar Inc. Accurate deliver of total fuel when two injection events are closely coupled
US6450149B1 (en) * 2000-07-13 2002-09-17 Caterpillar Inc. Method and apparatus for controlling overlap of two fuel shots in multi-shot fuel injection events
US6305348B1 (en) 2000-07-31 2001-10-23 Detroit Diesel Corporation Method for enhanced split injection in internal combustion engines
FR2818696A1 (fr) 2000-12-22 2002-06-28 Bosch Gmbh Robert Procede et dispositif d'injection de carburant dans un moteur a combustion interne
EP1217197A2 (de) 2000-12-22 2002-06-26 Robert Bosch Gmbh Verfahren und Vorrichtung zur Überwachung eines Abstands zwischen zwei Einspritzvorgängen
US6659072B2 (en) 2000-12-22 2003-12-09 Robert Bosch Gmbh Method and device for monitoring an interval between two injection operations
US6698396B2 (en) 2000-12-22 2004-03-02 Robert Bosch Gmbh Method and device for injecting fuel in an internal combustion engine
DE10254921B4 (de) * 2001-11-26 2015-01-08 Denso Corporation Kraftstoffzufuhr- und Einspritzsystem sowie Verfahren zum Steuern desselben
WO2003069146A1 (fr) * 2002-02-18 2003-08-21 Toyota Jidosha Kabushiki Kaisha Dispositif de reglage de l'injection de carburant dans un moteur a combustion interne, et procede d'alimentation par injection de carburant haute pression
US6729297B2 (en) * 2002-06-24 2004-05-04 Toyota Jidosha Kabushiki Kaisha Fuel injection control device
US7472689B2 (en) 2003-01-30 2009-01-06 Denso Corporation Fuel injection system
US20050257777A1 (en) * 2003-01-30 2005-11-24 Denso Corporation Fuel injection system
US7152575B2 (en) 2003-04-11 2006-12-26 Siemens Aktiengesellschaft Method for determining the injection duration in an internal combustion engine
US20060259227A1 (en) * 2003-04-11 2006-11-16 Jurgen Fritsch Method for determining the injection duration in an internal combustion engine
US20050047053A1 (en) * 2003-07-17 2005-03-03 Meyer William D. Inductive load driver circuit and system
US7057870B2 (en) 2003-07-17 2006-06-06 Cummins, Inc. Inductive load driver circuit and system
US7920957B2 (en) * 2005-07-14 2011-04-05 Robert Bosch Gmbh Method and control device for metering fuel to combustion chambers of an internal combustion engine
US7255087B2 (en) * 2005-08-02 2007-08-14 Robert Bosch Gmbh Method for controlling an injection system of an internal combustion engine
US20070056563A1 (en) * 2005-08-02 2007-03-15 Sebastian Kanne Method for controlling an injection system of an internal combustion engine
US20080228374A1 (en) * 2006-11-14 2008-09-18 Denso Corporation Fuel injection device and adjustment method thereof
US9588016B2 (en) * 2006-11-14 2017-03-07 Denso Corporation Fuel injection device and adjustment method thereof
US8095295B2 (en) * 2007-02-02 2012-01-10 Continental Automotive Gmbh Device and method for controlling fuel injection
US20090063016A1 (en) * 2007-08-31 2009-03-05 Denso Corporation Injection control device of internal combustion engine
US8543314B2 (en) 2007-08-31 2013-09-24 Denso Corporation Injection control device of internal combustion engine
US8113178B2 (en) * 2008-11-27 2012-02-14 Hyundai Motor Company Apparatus and method for controlling quantity of fuel over common rail diesel engine
US20100126469A1 (en) * 2008-11-27 2010-05-27 Hyundai Motor Company Apparatus and Method for Controlling Quantity of Fuel Over Common Rail Diesel Engine
US8725388B2 (en) 2010-02-05 2014-05-13 GM Global Technology Operations LLC Method for operating an injection system of an internal combustion engine
US20110192372A1 (en) * 2010-02-05 2011-08-11 GM Global Technology Operations LLC Method for operating an injection system of an internal combustion engine
US20110295490A1 (en) * 2010-06-01 2011-12-01 Honda Motor Co., Ltd. Fuel supply apparatus for internal combustion engine
US8620563B2 (en) * 2010-06-01 2013-12-31 Honda Motor Co., Ltd. Fuel supply apparatus for internal combustion engine
US20130103287A1 (en) * 2010-06-25 2013-04-25 Hui Li Method for regulating a fuel injection system of an internal combustion engine
US9353698B2 (en) * 2010-06-25 2016-05-31 Continental Automotive Gmbh Method for regulating a fuel injection system of an internal combustion engine
US8965663B2 (en) * 2011-01-31 2015-02-24 Honda Motor Co., Ltd. Fuel injection control apparatus for internal combustion engine and method for controlling internal combustion engine
US20120197512A1 (en) * 2011-01-31 2012-08-02 Honda Motor Co., Ltd. Fuel injection control apparatus for internal combustion engine and method for controlling internal combustion engine
US20150184626A1 (en) * 2012-08-06 2015-07-02 Continental Automotive Gmbh Method and Device for Controlling an Injection Process Comprising a Pre-Injection and a Main Injection
US10598114B2 (en) 2013-02-25 2020-03-24 Denso Corporation Fuel injection controller and fuel injection system
US9982616B2 (en) 2013-02-25 2018-05-29 Denso Corporation Fuel injection controller and fuel injection system
US20150101575A1 (en) * 2013-10-11 2015-04-16 Continental Automotive Gmbh Method and Computer Program for Actuating a Fuel Injector
US10100769B2 (en) * 2013-10-11 2018-10-16 Continental Automotive Gmbh Method and computer program for actuating a fuel injector
CN107636282A (zh) * 2015-05-26 2018-01-26 大陆汽车有限公司 用于多次喷射的燃料喷射器的致动
US10378475B2 (en) * 2015-06-12 2019-08-13 Cpt Group Gmbh Method for determining a reference current value for actuating a fuel injector
CN108138681A (zh) * 2015-11-19 2018-06-08 马自达汽车株式会社 发动机的燃料喷射控制装置
US10859028B2 (en) * 2015-11-19 2020-12-08 Mazda Motor Corporation Engine fuel injection control device
US10344704B2 (en) * 2016-08-26 2019-07-09 Ge Global Sourcing Llc Methods and system for diagnosing fuel injectors of an engine
US20180058367A1 (en) * 2016-08-26 2018-03-01 General Electric Company Methods and system for diagnosing fuel injectors of an engine
US11371464B2 (en) * 2016-08-26 2022-06-28 Transportation Ip Holdings, Llc Methods and system for diagnosing fuel injectors of an engine
US11060474B2 (en) 2016-12-13 2021-07-13 Denso Corporation Fuel injection control device
DE112017006251B4 (de) 2016-12-13 2024-02-08 Denso Corporation Kraftstoffeinspritzsteuervorrichtung
CN114981531A (zh) * 2020-12-30 2022-08-30 康明斯公司 用于测量在共轨燃料系统中的多脉冲燃料喷射事件期间的燃料量的方法
CN114981531B (zh) * 2020-12-30 2023-11-21 康明斯公司 用于测量在共轨燃料系统中的多脉冲燃料喷射事件期间的燃料量的方法

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EP0570986B1 (de) 1996-07-24

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